【摘 要】
：
In recent years,relaxor ferroelectrics,which exhibit dielectric dispersions in their maximum permittivity temperature without macroscopic phase transition,h
【机 构】
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Beijing National Center for Electron Microscopy,School of Materials Science and Engineering,Tsinghua
【出 处】
：
The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)
论文部分内容阅读
In recent years,relaxor ferroelectrics,which exhibit dielectric dispersions in their maximum permittivity temperature without macroscopic phase transition,have been widely used in dielectric and piezoelectric fields due to their promising properties.The polar nanoregion(PNR),as a typical structure character of relaxors,is generally believed to be responsible for the relaxor behavior.Here,with the help of high resolution transmission electron microscopy and high resolution scanning transmission electron microscopy,we investigate the relationships between the polar nanoregions and chemical distribution in a kind of leadfree relaxors,Ba(Ti0.8Sn0.2)O3.
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